Invention Grant
- Patent Title: Built-in self-test (BIST) circuit and associated BIST method for embedded memories
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Application No.: US14918149Application Date: 2015-10-20
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Publication No.: US09761329B2Publication Date: 2017-09-12
- Inventor: Aravindan J. Busi , Deepak I. Hanagandi , Krishnendu Mondal , Michael R. Ouellette
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Gibb & Riley, LLC
- Agent Anthony J. Canale
- Main IPC: G11C29/38
- IPC: G11C29/38 ; G11C29/18 ; G11C29/44 ; G11C29/04

Abstract:
An integrated circuit chip with a built-in self-test (BIST) circuit having a BIST engine, which is electrically connected to multiple memories, which tests those multiple memories in parallel, and which incorporates an address generator. Prior to testing, the address generator generates a pair of tables. The tables include a first table, which indicates the highest decode numbers per specific bank numbers in all of the multiple memories, and a second table, which indicates the highest bank numbers per specific decode numbers in all of the multiple memories. During testing, the address generator sequentially and dynamically generates the specific test addresses to be swept and does so such that all of the specific test addresses are within a composite address space that is defined by one of the tables and by the highest maximum word line number in any of the memories. Also disclosed is an associated BIST method.
Public/Granted literature
- US20170110205A1 BUILT-IN SELF-TEST (BIST) CIRCUIT AND ASSOCIATED BIST METHOD FOR EMBEDDED MEMORIES Public/Granted day:2017-04-20
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